1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8// UNSUPPORTED: c++03, c++11, c++14, c++17
9
10// <set>
11
12// class set
13
14// template<class Key, class Compare, class Allocator>
15// synth-three-way-result<Key> operator<=>(const set<Key, Compare, Allocator>& x,
16// const set<Key, Compare, Allocator>& y);
17
18#include <set>
19
20#include "test_allocator.h"
21
22int main(int, char**) {
23 // Mismatching allocators
24 {
25 std::set<int, std::less<int>, std::allocator<int>> s1;
26 std::set<int, std::less<int>, test_allocator<int>> s2;
27 // expected-error@+1 {{invalid operands to binary expression}}
28 s1 <=> s2;
29 // expected-error@+1 {{invalid operands to binary expression}}
30 s2 <=> s1;
31 }
32 // Mismatching comparision functions
33 {
34 std::set<int, std::less<int>> s1;
35 std::set<int, std::greater<int>> s2;
36 // expected-error@+1 {{invalid operands to binary expression}}
37 s1 <=> s2;
38 // expected-error@+1 {{invalid operands to binary expression}}
39 s2 <=> s1;
40 }
41 {
42 std::set<int, std::less<int>> s1;
43 std::set<int, std::less<float>> s2;
44 // expected-error@+1 {{invalid operands to binary expression}}
45 s1 <=> s2;
46 // expected-error@+1 {{invalid operands to binary expression}}
47 s2 <=> s1;
48 }
49 // Mismatching types
50 {
51 std::set<int> s1;
52 std::set<float> s2;
53 // expected-error@+1 {{invalid operands to binary expression}}
54 s1 <=> s2;
55 // expected-error@+1 {{invalid operands to binary expression}}
56 s2 <=> s1;
57 }
58
59 return 0;
60}
61

source code of libcxx/test/std/containers/associative/set/set.nonmember/compare.three_way.verify.cpp